Jump to content
SAU Community

Recommended Posts

ATR43 SS-2 Rb25det Stagea. Externally gated from stock exhaust manifold E85 fuel. Final result of 356rwkws @ 22psi on Dyna dynamic dyno:

boost.jpg

coolercompare.jpg


Further testing and evaluation on the SS2.5 Alpha turbocharger, now using an 600x300x68mm tube n fine front mount cooler. I've attached two photos, note the tubing size inside the aftermarket cooler and factory cooler.



Aftermarket cooler:


insidenewcooler.jpg



Stock cooler:


insidestockcooler.jpg



Using the new intercooler, boost tapering issue was resolved to some extend and the same turbocharger managed to pickup more power. Cooling ability however is not as good as standard, under comparison my intake temp rise by 10 degrees. I will be fitting an thicker 600x300x100mm cooler for further evaluations coming week.


Turbocharger wise, it is matching factory N1's responds but a lot more power. Pretty good to drive at this stage.



ATR43SS2.5 Alpha, externally gated on pump 98 fuel. Peek 330awkws:


atr43ss25alpha330rwkw.jpg




atr43ss25alphaboost.jpg



Vs stock cooler using the same turbo:


coolervs.jpg



In conclusion based on test result, the factory GTR intercooler is only good for up to 320rwkws on pump fuel, for upgrade, I would be recommending a good cooler that has a core size of 600x300x100mm.



Tuned by Trent Hewitson, Intercooler piping and related fabrication done by Havoc Fabrications.


  • Like 1

All three GTR coolers are different, the 33 is best for cooling efficiency but worst for outright flow

My 105mm ARC cooler ( the best in the business) is about 4-6deg hotter then the factory 34 cooler but will happierly flow 1000hp

As I mentioned to Tao yesterday, Daz has made 500kw on a stock cooler and is heading for more. Not sure yet if he plans to upgrade his cooler this time around.

As I mentioned to Tao yesterday, Daz has made 500kw on a stock cooler and is heading for more. Not sure yet if he plans to upgrade his cooler this time around.

Yeah Ive heard of 450kw before

As I mentioned to Tao yesterday, Daz has made 500kw on a stock cooler and is heading for more. Not sure yet if he plans to upgrade his cooler this time around.

It isn't stock, it's 90 mm thick.

All three GTR coolers are different, the 33 is best for cooling efficiency but worst for outright flow

Weird that they're all different. How does the 32 cooler go?

And for people whom are switching to the ID 1000 injectors. The resister pack made for OEM injectors has to be removed. Big thanks for M35scotty on solving this issue yesterday. I believe he has some technical details to share.

Weird that they're all different. How does the 32 cooler go?

The 32 is the best for flow but worst for efficiency, it is extrude honed and doesn't have the little fine fins inside the runners

You can tell the difference between 32 and 33 by the front of the runners, the 33 has a grove that runs along the runner which the 32 doesn't

And for people whom are switching to the ID 1000 injectors. The resister pack made for OEM injectors has to be removed. Big thanks for M35scotty on solving this issue yesterday. I believe he has some technical details to share.

That is something very simple and well known, simple cut the resistor off and solder the seven wires together then a bit of heat shrink and electrical tape and bingo high imp injectors working

  • Like 1

One of his injectors had stopped working, after testing it I realised he hadn't cut the resistor pack off, one resistor had blown taking the power from that injector.

The resistor pack was much hotter than usual. Obviously it runs fine on the Haltech without modification, but overloads the resistors. Goes to show the Haltech runs some great output drivers.

Um, aren't the injectors on a GTR a negative trigger, so all the ecu has to do is earth them

That's the reason you remove the resistor, cause it's no longer needed and the high imp injectors will fry it

The 32 is the best for flow but worst for efficiency, it is extrude honed and doesn't have the little fine fins inside the runners

You can tell the difference between 32 and 33 by the front of the runners, the 33 has a grove that runs along the runner which the 32 doesn't

Sweet it should be better for e85 to a certain extent then as it doesn't need the efficiency that it would for 98

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • I haven’t pulled the injectors to watch them spray yet but they are clicking from the cas and all of the spark plugs are wet with fuel. I’ve thought the cylinders were being flooded from the beginning and was hoping fuel pressure would fix it. Tonight I am going to pull the rail and watch the injectors spray. Don’t know how to test/diagnose if the plugs are firing in correct sequence but that should be a timing thing and as far as timing goes my car still has the half moon for the cas can only install it 1 way. And my mechanical timing is 100% correct I posted photos above. Confirmed with the balancer on and off. 
    • I checked spark on all cylinders and they all visually have spark with the plug pulled and grounded, but plug 1 is the only one that fouled. This was a running swap that blew up and was rebuilt by a machine shop, put a new wiring specialties harness and did all gaskets, studs, and bolts while it was out.  compression is 135-150 across all cylinders. Aside from that from my understanding with the z32 ecu and maf the car should start regardless. The wiring for TPS and the dual 02 sensor/ dual knock sensor stuff shouldn’t actually stop the car from starting or even running well, (just slightly rich)  they just give fault codes. Car supposedly is supposed to start as long as you have z32 afm and ecu with the nistune base map and that’s info coming from a well known and trusted tuner who does a lot with SR/RB (Rsenthalpy). After more trouble shooting today where I’m at right now is that the cas is sending signal to the injectors they click while spinning the rotor, Fuel pressure is now set at 43psi, all cylinders have good compression and all of the plugs looked great (just wet with fuel) except for cylinder 1 which was very black (cylinder 1 has 150psi compression). all of the coils generate spark if pulled out and grounded out on the head. On the fuel pump car just pops into the exhaust. On starting fluid car will fire off. Hard to tell if all cylinders are firing off but definitley a couple. sounds like all of them but it’s only for 3-5 seconds hard to tell. 
    • Final update!!! Got the front bar fitted and sprayed and all sorted now. My cutouts worked great and the indicators aren’t just falling off. 😂  
    • Is this a brand new LSD? if so, have you followed any break/bed in procedure for it? Usually involves heaps of figure 8 patterns, a fluid flush.
    • It's TWO steering wheels actually. 😛 one for each hand They are wheels, and they steer!
×
×
  • Create New...